Is it possible for this NG to outdo Content Central

It sprang to mind that the NG folks just might be able to come up with sources far more extensive and useful than Content Central. So here is
the challenge. Post your favorite/useful source for information (like glass bottle threads, material properties, left handed gimcracks, etc.) and the group can select the winner. The winner will get a box of doughnuts in the mail courtesy of this station. :)
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Hi,
Please tell me what gimcrack is!
Zander
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You got it right.
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gimcrack \JIM-krak\, noun: A showy but useless or worthless object; a gewgaw.
adjective: Tastelessly showy; cheap; gaudy.
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